| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,604,051 |
| Solve the Secret Country #1 | 0 | - | 4.94 | 164,366 |
| Solve the Secret Country #2 | 0 | - | 4.87 | 117,153 |
| Anagram Chain - Countries | 0 | - | 4.99 | 115,816 |
| Countries but all Vowels are Changed to O | 0 | - | 4.93 | 68,648 |
| Solve the Secret Country #3 | 0 | - | 4.98 | 63,835 |
| Countries of the World Quiz | 0 | - | 5.00 | 47,160,336 |
| Landlocked Countries | 0 | - | 4.99 | 416,612 |
| Word Scramble - Countries | 0 | - | 4.86 | 2,094,238 |
| Top Five Countries By Category #1 | 0 | - | 4.99 | 448,052 |
| Countries with Four Letters | 0 | - | 4.99 | 420,304 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,740,369 |
| Sahara Desert Countries | 0 | - | 4.98 | 161,907 |
| Himalayan Countries | 0 | - | 4.95 | 136,485 |
| Andean Countries | 0 | - | 4.95 | 83,482 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 62,742 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 123,987 |
| Coffee Producing Countries | 0 | - | 4.83 | 66,416 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,018 |
| Danube Countries | 0 | - | 4.97 | 71,425 |
| Countries With an "Ish" Demonym | 0 | - | 4.97 | 116,204 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 85,845 |
| Countries with the Worst Passports | 0 | - | 4.94 | 83,145 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 148,108 |
| European Landlocked Countries | 0 | - | 4.99 | 146,127 |
| Partially Recognized Countries | 0 | - | 4.98 | 105,755 |
| Countries with the Most Species | 0 | - | 4.99 | 101,449 |
| Countries 197 to 205 | 0 | - | 4.89 | 69,894 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,328 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,507 |
| Top Five Countries By Category #2 | 0 | - | 4.93 | 198,984 |
| Countries that Use the Peso | 0 | - | 4.88 | 59,156 |
| Top Five Countries By Category #3 | 0 | - | 4.82 | 170,262 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 72,806 |
| Countries with a AAA Credit Rating | 0 | - | 4.85 | 57,184 |
| Countries in the Alps | 0 | - | 4.86 | 117,316 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 94,897 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 105,884 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,250 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 95,738 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 115,814 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.91 | 95,251 |
| Country Chain | 0 | - | 4.96 | 216,404 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 99,978 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 52,991 |
| Largest Country by Body of Water | 0 | - | 4.96 | 57,802 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,327 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,361 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,203 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 103,724 |
| Arctic Ocean Countries | 0 | - | 4.95 | 78,990 |
| Countries with the Most Grassland | 0 | - | 4.93 | 77,001 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 117,706 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 67,889 |
| Countries that Host the Most Refugees | 0 | - | 4.95 | 59,428 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 45,241 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 240,984 |
| World Countries - Blind Typing | 0 | - | 5.00 | 106,560 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 47,824 |
| Largest Countries By Category | 0 | - | 4.97 | 157,251 |
| Countries by Emojis | 0 | - | 4.99 | 237,782 |
| Countries by Countries | 0 | - | 4.96 | 62,592 |
| Countries With One Word And Two O's | 0 | - | 4.94 | 55,439 |
| Category Elimination - Countries #1 | 0 | - | 4.99 | 318,625 |
| Country Flags with the Most White | 0 | - | 4.87 | 137,868 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,079 |
| Countries with the Southernmost Northernmost Point | 0 | - | 4.87 | 47,409 |
| Country Flags With Only Two Colors | 0 | - | 4.92 | 88,080 |
| Islands by Country #1 | 0 | - | 4.87 | 174,819 |
| Regions of Countries #1 | 0 | - | 4.96 | 159,177 |
| Regions of Countries #2 | 0 | - | 4.95 | 123,525 |
| Regions of Countries #3 | 0 | - | 4.85 | 90,499 |
| Can You Name These 50 Random Countries? | 0 | - | 4.98 | 214,986 |
| Name a Valid Country #3 | 0 | - | 4.99 | 261,658 |
| Name a Valid Country #1 | 0 | - | 4.99 | 286,954 |
| Name a Valid Country #2 | 0 | - | 4.98 | 248,996 |
| Name a Valid Country #4 | 0 | - | 4.97 | 253,991 |
| Name a Valid Country #5 | 0 | - | 4.99 | 204,705 |
| Name a Valid Country #6 | 0 | - | 4.94 | 128,267 |
| Countries by Languages in 90 Seconds | 0 | - | 4.93 | 716,082 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 326,815 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 373,814 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 403,753 |
| Island Countries | 0 | - | 4.99 | 708,798 |
| Biggest Countries by Area | 0 | - | 4.99 | 1,043,290 |
| Northernmost Countries | 0 | - | 4.99 | 359,352 |
| Countries of South America | 0 | - | 5.00 | 919,631 |
| Countries of Oceania | 0 | - | 5.00 | 1,046,594 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,858,635 |
| "Land" Countries | 0 | - | 4.98 | 334,590 |
| Five Biggest Immigrant Groups by Country #1 | 0 | - | 4.97 | 179,892 |
| Five Biggest Immigrant Groups by Country #2 | 0 | - | 4.91 | 88,694 |
| American Countries with the Shortest Names | 0 | - | 4.96 | 120,721 |
| Countries with the Most McDonald's Locations | 0 | - | 4.83 | 110,514 |
| Biggest Countries with No McDonald's | 0 | - | 4.84 | 89,109 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,370,356 |
| Countries by Initial Letter and Continent #3 | 0 | - | 4.93 | 48,182 |
| Countries by Initial Letter and Continent #2 | 0 | - | 4.91 | 95,905 |
| Category Elimination - Countries #2 | 0 | - | 4.98 | 234,661 |
| Category Elimination - Countries #3 | 0 | - | 4.99 | 223,792 |
| Category Elimination - Countries #4 | 0 | - | 4.99 | 191,184 |
| World Countries by 10 Category Elimination #1 | 0 | - | 4.97 | 122,070 |
| Top Five Countries by Random Categories | 0 | - | 4.95 | 138,219 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 102,830 |
| Random Countries by Borders | 0 | - | 4.99 | 81,942 |
| Random Name a Valid Country | 0 | - | 4.99 | 204,095 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 172,263 |
| Countries with Megacities | 0 | - | 4.99 | 248,913 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 198,115 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 112,538 |
| Countries With More than 200 Million People | 0 | - | 4.96 | 136,473 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 80,491 |
| Countries by Official Language | 0 | - | 4.95 | 193,998 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 294,521 |
| Countries in their Native Language | 0 | - | 4.99 | 197,623 |
| Independence from Whom | 0 | - | 4.99 | 210,796 |
| Subdivisions by Country | 0 | - | 4.86 | 50,196 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 131,317 |
| Megadiverse Countries | 0 | - | 4.96 | 134,535 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 130,819 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,073 |
| Countries with Multiple Big Islands | 0 | - | 4.92 | 125,625 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 74,948 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 162,437 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,210 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 93,574 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 153,544 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,368 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 44,805 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 76,155 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,578 |
| Countries Furthest from the United States | 0 | - | 4.94 | 88,682 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,640 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 74,857 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,199 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 109,551 |
| World Map Quiz | 0 | - | 4.81 | 64,075 |
| Recognized, Non-Recognized Countries, and Territories of the World | 0 | - | 5.00 | 154,362 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 106,689 |
| Southernmost Countries of the World | 0 | - | 4.99 | 227,054 |
| Countries by Inland Surface Water | 0 | - | 4.94 | 104,662 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 122,393 |
| Countries With the Most Languages | 0 | - | 4.90 | 200,696 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,264 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 93,457 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 98,621 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,144 |
| Tallest Countries North to South | 0 | - | 4.83 | 119,636 |
| Widest Countries East to West | 0 | - | 4.92 | 129,136 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,329 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 185,638 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 97,908 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 93,955 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 147,976 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,351 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,089 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.84 | 34,670 |
| Countries with Double Letters | 0 | - | 4.96 | 94,107 |
| Countries that End in N | 0 | - | 4.95 | 165,326 |
| Countries with Five Letters Quiz | 0 | - | 4.96 | 259,539 |
| Countries with Six Letters | 0 | - | 4.93 | 211,119 |
| Countries with W | 0 | - | 4.97 | 158,788 |
| Countries with Z | 0 | - | 4.98 | 288,735 |
| Countries with Letters Missing | 0 | - | 4.97 | 185,017 |
| Countries That End in U | 0 | - | 4.95 | 119,903 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 133,141 |
| Countries that End in O | 0 | - | 4.92 | 158,857 |
| Countries that End in R | 0 | - | 4.87 | 118,503 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,206 |
| Countries Ending in "IA" | 0 | - | 4.99 | 207,730 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 169,726 |
| Countries by Last Two Letters | 0 | - | 4.85 | 134,806 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 141,369 |
| Countries That End in Y | 0 | - | 4.90 | 185,413 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 196,821 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,078 |
| Countries that End in I | 0 | - | 4.94 | 134,664 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 182,682 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,405 |
| Countries That End in NIA | 0 | - | 4.92 | 109,288 |
| Countries That End in BIA | 0 | - | 4.93 | 148,552 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 166,419 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 118,765 |
| Countries That End in RIA | 0 | - | 4.93 | 126,331 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 110,323 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 226,067 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 132,863 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 125,197 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 90,774 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,139 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 52,431 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 102,934 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 124,830 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 48,992 |
| Countries with the Word "And" | 0 | - | 4.99 | 116,515 |
| Countries Containing Two or More Words | 0 | - | 4.96 | 53,193 |
| Countries that End in L | 0 | - | 4.94 | 156,284 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 212,859 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,065 |
| City to Country Quiz #1 | 0 | - | 4.96 | 155,709 |
